I went to put the cam in the .040 over 350 I'm building for Maxine this afternoon and it wouldn't go past the second bearing. This is the second time it's happened to me; a few years ago I had the same thing happen. That time I warmed up the block with a torch and the cam went in but when it cooled, it wouldn't turn and I broke the end of it off at the index pin trying to turn it. I had tried 2 sets of bearings on that one, I don't know what the hell I'm doing wrong!